What I get from this is that the first use of Ki Step after resting will consume 3 uses of Stunning Fist.If this ability was last used more than two turns (minutes) ago, one use of your stunning fists is refunded. If it was not used before, or you have rested in the mean time, no refund is granted.
Any use of Ki Step after that will consume 2, as long as 2 minutes has passed since last using the ability.
Is this correct?